Elastic-tube ptjmp



f ters of reference "marked thereon.` i

The` nature of our invention consists in the employment offan'elastic tube which by its i recovery from compression overcomes meer BRAT'rLEBoRjo, VERMONT.

' nnas'rrortmn rUMP.

\ Yi" speccation of Lettersratem No. laves, dated April 17, 1855.

` To all tui-1.0m it may/concern:

Beit known that we, RUFUs PORTER, of

the city. of Washington, in the District of Columbia, .and` J. 11).(` BRADLEY, of Brattleboro,f`in[the county of Windham and State of Vermont, havekinv'ented a new .andV useful Improvement in Pumping and `Forcing Waterand otherFluids, .whichwe call o-ur y @Elastic-Tube Pump?, `andwe` hereby def fclare that the following is aV full `and exact descriptionthereof,"reference .being had to the accompanying drawings and to the let-V theatmospheric pressure, creates a vacuum within it, and drawsthe water or other fluid y, ,"andbyusing plssurejonthe outside of this tube"`which` (by, flattening and closing it exy pels orjforcesthe fluid. 1

The conduit from the `well (A) is made to i terminate in afew feetof vulcanized india rubber `hosejCB),ofsuficient thickness and i *elasticity to resist when empty the weight y ofthe airi Thehosegis firmly attached to a stout 1cylindrical surface (C) so `that when traversedwby a roller, (D) its several parts ywill be successively pressed and will in turn recover by their elasticity behind the roller thus producing theyacuum; while the roll- .ers pressure forceslor projects the w'ater which isbeforeyitm 'Iloperform `thefiunction of what in rotary pumps is called ithekbutment we So` arrange; it that` two "places, in thetube `are i. closed at,ftheg same instant uof time. This 1 may bedoneether `by giving the hose one entire coil,taking` care that the roller is V long; enough: to flatterij both diameters Vat that partof the helix where they pass each other (as seen at `I `and F ign-VI); or: it may be doneby having the hose or hoses occupy feachfan arc of a circle and by so increasing thenumber of rollers as toinsure the pressure zof two at the same instant of time thus `simultaneously closing each end of eachV seg- ".mentof hose` employed. The `same effect mayzalso be produced by fasteningzthe hose ena, plane surface, and by attaching several `rollers to an endless chain or band which V shall carry their axes in` groves parallel with jandisuicientlyfneartothe plane to secure a pressures; alwaystakingcare that the for-` ward roller shall no-t cease to press until its successonshall have closed the tube. Y

'Io enable othersskilled in theart to make and use v`our invention hwe proceed to describe more particularly its construction and operation. Y i y We procure from the manufactories Vof vulcanized india rubber a stoutA hose (see (Fig.` IV) of the most permanentelasticity; if the material be good, the spring of this tube `will be suliicient, if its greatest `thickness behalf its caliber. When the well is not deep, the thickness may be diminished and the` bore maybe larger in proportion.

This tube is firmly` fastened onto so-me outside or insidef cylindrical surface (C) against y which when traversed by a roller, it may be pressed. When the `inside cylindrical surface is used for that purpose, we save room j and material by using (instead of a perfect cylinder) only a helical `band (as exhibited in fC, F ig VII) y and for conveniently attaching thehose to the inside of the band,

fiar Vormen.

` RtiFUs PoRTERyoEwAsHINGroN, Drsraijo'ror COLUMBIA, AND J. D. BRADLEY, or

the latteris cast in two parts capable of be- ,l

ing closed together by screws (E) and capai ble of gripping and holding a bead o-r moldl' ing made for that purpose on one side of the lhose` (as seen at'F Fig. IV). In order to carry j around a roller within the coil when thus fastened we make one of thehalves of the helical band a part of the same casting which forms the pedestal or` platform by which the pump is fastened down (G, Fig.

VII) `and from this platform and forming `part of the same casting a stout post vFigfVII) arises capable of holding rmly a central arbor or spindle (I, Fig. VII) to' whicha revolving socket is fitted (see J,

-Fig. VII). A From near veach end of which socket and forming part of the same casting with it two arms (K) project at rightangles, capable of carrying around the roller l and the arm which is farthest from the post is attached the crank handle or pulley` which lsupplies the moving power (see L Fig. I and'Fig VII). In order to apply at pleas-` ure a greater or less pressure on the hose the axis of the roller is carried around by two puppet-heads, (M) and' these are governed by adjusting screws acted on by nuts held in mortises, one in each of the arms (as seen at N). ,l

When it is desirable that the spring of the hose should vloe relieved, or that the water Vthe arm for that purpose (as seen at Q Fig.

VI and Fig. Il). This latter purpose may also be edected by applying the power at the central axis or upon its socket and by making joints in the arms which allow them to partially cripple when the power is withdrawn and to elongate by straightening when the power is applied. The two outer joints of the arms should in such case be cast together forming one piece havinga crossbar cast with them to unite them7 to insure uniformity of motion, and the two inner joints of the arms should be cast on the socket or axis. The same purpose may also be eifected by an eccentric in the main axis or by cams on the main axis allowing however in such case the central arbor to revolve K spring of the rubber behind but Anot the full spring before it.' loI insure vhowever the' closing of the 'tube atV this cone wel fasten'A Under ita lftvhsh .CorrespondS with 'and' compensates this diminution o'f'thickness l`(S, j Fig. VIII).

K diverge from a centralurevolving socket at in stationary boxes and carry the cams instead of applying the power to a socket as above described. .For the purpose of securing uniformity in the resistance to the roller we make that part of the hose where the` helix has completed its circuit, or in case of an arc the place where the foremost roller is about to leave the hose) a truncated cone (R, Fig. VI and Fig. VIII) tapering to a less thickness; so that the roller coming around topencounter again the resistance of. the oneend of the hose, will vat the same instant-'ottime at the'other end liavefthe full Another formof our machine: would be to attach the coil or segments of hose to a fcircularvfpla-ne disk and traversei'them with conical rollers, the axes of which should an inclination from the plane ofthe disk while their 4sides in 1cont-act with the ltube somewhat similar to this last may be made by attaching the tube to an outside or inside conical surface and by traversing the same with conical rollers and relieving the spring by the screw and collar.

The material we use for the elastic tube is as we have already said vulcanized india rubber; we are not yet suiiiciently informed as to whether gutta percha can be made sufficiently elastic and durable. We have spoken of this tube as if it were a cylindrical tube-it may be varied in form and a prism or semi cylinder may be used; again-a metallic trough may be employed with a sheet of rubber stretched over it; thus employing the tensile elasticity instead of the resistance to compression; but we consider the cylindrical form the best. It is necessary that the rubber be so mixed and tempered as to retain its elasticity in. cold weather. And when force pumps and condensers of great power are to be made it is to be so prepared as to produce a tougher and stronger article; but as these processes are the subjects of existing Letters Patent we omit all description of the details. We will add that in making force pumps and condensers it will be well to diminish the bore as well as the thickness of the cone and spoutto avoid weakening those parts.

The material of the helical band and its post, as well as the socket and` its arms may Babbitt metal'for itsl'jou'rnals A convenient modeof keeping the axis yof the i relier oiled; Yto turn down its'"central i portion ("as seenat T F ig. V) and put onfaE `loose cotof annel cloth capable of being saturated with oil Vand gradually 'furnishing iftto the journals. j i Y 'i `lVe have contemplatedthel application of our principle to the pumping" of ships-andi jshouldin such case'iforV pumps of'lar'ger' capacity have the central arbor revolve/with cams on it would 'protrude'the' arms. We have also contemplated its application towvre engines' andv other force pumps' for` projecting water; varying of course the gear# ingfso as to adapt it to the'poweremployed when ofsteam, horsesor'men; and yincreas-A y ing sufcientlyfthenumber*of coils'or arcs toy give the requisite capacity. We have contemplated its application to air pumps and condensers of air and vapors; employing however two or more rollers on one coil. )Ve have contemplated its application to the raising andy moving substances of partial fluidity such as molasses and syrups of sugar in process of manufactureusing in this case n sert boxes yof only an arc of the horse which` should be acted on by three or morerollers and plac- Q ing this `are or segmenten an upper limbof n thecircle so that the molasses will drain out from the spoutas soon as the rollers recede on the withdrawal` of the power. We have contemplated the application to p umps i for scavengers for `the cleaning of Iprivies; y covering the castor portable receivers with a anched sheet of india rubber and intro-f ducing the spout `so that nooffensivegases should escape. We have thought of using threeor more rollers ion this kind of pump and letting them act on a segment" of hose of large bore, and of using stop-cocks on the spoutso that by inverting the motion the pump, conduit, andeven the privy would be rinsed or washed. We have also contemplated its application to the purposes of stomach pumps, and l; apparatus for injections. i

{What we claim as our invention and desire to secure by LettersPatent is asfollows: l. The mode of equalizing the resistance by a truncated cone of gradually diminishing thickness,"by which the roller may leave the tube incombination with a lift S below, as hereinbefore specified.

2.\The relieving the spring ofthe tube and the allowing the water to recede by means of jointed arms eccent-rics or cams as hereinbefore specified.

3. The ino-de` of attaching the tube to the helical band by means of forming the lat-ter in two parts and by meansof a bead or molding on the former as specified for the `purposes set forth in the foregoing specification RUFUS PORTER. y

Witnesses J' D' BRADLEY.

G. H. MOSELEY, l C. O. CHAPIN. 

